Watch it boys: if you're trying to get in, these girls will make sure you stay out! Poor Shingo. His coed school, Kagamidai, begins the process of merging with Yuihime, an all girls private academy. Not only that, but Shingo's also been picked to be part of a group of test males who will be transferred into a Yuihime classroom. Suddenly, he is surrounded by the enemy, no ammo in sight, and with literally no man power to back him up. How will Shingo survive this death trap of feisty females? Will he learn to coexist, or will he just get his eyes scratched out?